标题：Numerical simulation of laminar flow field in a stirred tank with a Rushton impeller and a pitch 4-bladed turbine
作者：Zhou, Shen-Jie ;Luan, De-Yu ;Chen, Song-Ying
作者机构：[Zhou, Shen-Jie ;Luan, De-Yu ;Chen, Song-Ying ] School of Mechanical Engineering, Shandong University, Jinan 250061, China;[Luan, De-Yu ] School of Me 更多
来源：Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
关键词：Laminar model; Numerical simulation; Pitch 4-bladed turbines; Rushton impeller; Stirred tank
摘要：Numerical simulation method was applied to study the velocity dispersion properties of laminar flow for the agitation of glycerin in a flat-bottomed cylindrical stirred tank with diameter of 0.21 m, equipped with a Rushton impeller and a pitch 4-bladed turbine. The effects of four different impellers rotating at constant speed of 200 r/min on velocity profiles and power consumption were extensively examined. The results show that the stirred performance of the Rushton impeller was better than one of the pitch 4-bladed turbines, however, accompanied with higher power consumption according to the calculated values of required power. Moreover, there were similar flow characteristics for the pitch 4-bladed turbines with different blade pitch angle. The research provided a theoretical basis for the design and application of the stirred tank with laminar flow.